CN2363266Y - Rotary laser plane positioner - Google Patents
Rotary laser plane positioner Download PDFInfo
- Publication number
- CN2363266Y CN2363266Y CN 99204760 CN99204760U CN2363266Y CN 2363266 Y CN2363266 Y CN 2363266Y CN 99204760 CN99204760 CN 99204760 CN 99204760 U CN99204760 U CN 99204760U CN 2363266 Y CN2363266 Y CN 2363266Y
- Authority
- CN
- China
- Prior art keywords
- signal
- rotary laser
- laser plane
- positioning device
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a rotary laser plane positioner, a laser beam vertical to a rotating shaft scans a light plane, the light plane is accurately positioned, the relative distance between spatial points at the two sides of the light plane can be measured. The laser beam emitted by a semiconductor laser has a diverging angle, in ordinary laser receivers by means of measuring the position of the light spot, the positioning error is increased following with the increase of the measuring distance. The rotary laser plane positioner changes the distance between the photoelectric converters and utilizes the means, such as a comparator, a jump detector, etc., the positioning error is decreased to plus or minus 0.5MM or less, so the performance is better than the performance of theodolites and ordinary spirit levels when the measuring distance is equal to or larger than 30 m, the utility model is minimized and made as a tool, and the carrying and the use are convenient.
Description
The utility model relates to a kind of steady arm.Be particularly related to a kind of optical plane steady arm that can measure the optical track mark position of center line that the laser beam sent by the rotary laser transmitter scans out a long way off.
The core of rotary laser transmitter is a semiconductor laser, and the laser beam of sending is perpendicular to turning axle, and rotation makes laser beam form an optical plane in the space.No matter its radius of this optical plane is much, spatial orientation how, and is not crooked, indeformable.As reference field, be determined at the relative distance between each spatial point of optical plane normal direction with optical plane, very big practical value is arranged.But the laser beam that semiconductor laser sends has certain angle of divergence, and lasing beam diameter increases with the increase of transmitting range.According to the performance specification of existing rotary laser receiver product on the market as can be seen, various laser pickoffs are means to measure facula position all, make proportional as the optical plane positioning error and the spot diameter of reference field, cause measuring error to increase to the distance between the generating laser, make the purposes of rotary laser transmitter be restricted with check point.
This rotary laser plane positioning device can be measured the position of the optical track mark center line that the rotary laser transmitter scans out at check point, makes that the diameter of the positioning error of optical plane and hot spot is irrelevant, thereby and check point to the range-independence between the generating laser.Like this, in the maximum measurement range that rotary laser plane positioning device allows, can obtain, its error and check point to range-independence between the rotary laser transmitter, for accurate location as the optical plane of reference field.Be limited in just because of the positioning error that requires optical plane in the fixed range of certain and range-independence, this rotary laser plane positioning device circuit structure has been taked the described technical measures in back, guaranteed this steady arm in the placement error value of each check point less than 1mm.This just makes this steady arm can partly replace the work of transit and ordinary level.Because the minimum angles measuring error of transit is ± 7 ", 30 meters are 2mm perpendicular to the linear measure longimetry error of direction of visual lines under this angle error; Even and at 150m or farther, as long as in measurement range, always the range observation error between the each point of this steady arm aiming plane both sides can accomplish to be no more than 1mm.
To achieve these goals, the utility model adopts two independently signalling channel A, B on circuit, shown in figure one.Each signalling channel all be photoelectric sensor foremost, the photoelectric sensor of two signalling channels is spatially made line spread, the straight line parallel that connects two photoelectric sensors is in the vertical center line of steady arm.When measuring, make the joint lines direction of two photoelectric sensors be parallel to the normal direction of optical plane.Photoelectric sensors A 1, B1 become pulsed current signal with the pulsed laser signal that the rotary laser transmitter sweeps; Pulsed current signal is transformed into pulse voltage signal through current-to-voltage convertor A2, B2; This pulse voltage signal is amplified into comparer A4, B4 through voltage amplifier A3, B3, the output signal of comparer is sent into transition detection device A5, B5 again and is made transition detection, the above skip signal of the detected threshold value of transition detection device makes monostable circuit A6, B6 action separately and keeps certain hour, this has been kept the skip signal of certain hour to send into microprocessor 7 again and has carried out signal Processing.The microprocessor that this device adopts high-performance, have an inner ROM (read-only memory) carries out signal Processing.The process flow diagram of signal handler is shown in figure two.
For in whole measurement range, on the various distance detection points, drop to the positioning error of optical plane below the 1mm and be fixed in this scope, taked following technical measures:
The utility model employing is difficult for saturated photoelectric cell and makes photoelectric sensor, receives from the rotary laser transmitter and sweeps next pulsed laser signal.Because photronic output current is directly proportional with the light intensity and the light-receiving area of incident light.In design, the enlargement factor of careful arrangement photo signal channel makes the pulse signal of above-mentioned photoelectric sensor output reach certain more than the preset threshold, and the above pulse signal of this threshold value causes the saltus step of transition detection device, and the output hopping signal.After microprocessor is received the skip signal that certain signalling channel sends here, indicate the photoelectric cell of this photo signal channel to receive laser signal with sound and light (light that red light emitting diodes sends) signal.Because the pulse signal amplitude of input transition detection device is when preset threshold is following, saltus step does not take place in the transition detection device, suitably improves this threshold value, can improve the antijamming capability of photelectric receiver.
Adopted comparator circuit in the photo signal channel of the present utility model, this circuit sensitivity height is easy to set the saltus step threshold value, threshold value both sides state has saltus step fast, and good stability, reliable operation, can obtain the enlargement factor of needs with the cost of minimum, thereby make circuit reduction.
The utility model for guarantee in whole measurement range, on the various distance detection point, the positioning error of optical plane is remained on one than in the fractional value, two groups of photoelectric cells having taked to place point-blank are the structures that can move, two groups of photoelectric cell move toward one another or opposing motions equidistantly simultaneously, during move toward one another, distance between two groups of photoelectric cells is dwindled, minor increment is zero, distance is that a groove is done in zero position between two photoelectric cells, as the Warning Mark of position of center line; During opposing motion, the distance between two groups of photoelectric cells increases, the just measurable maximum spot diameter of the ultimate range between the photoelectric cell, and it is corresponding to the farthest check point of rotary laser plane positioning device to the rotary laser transmitter.At this moment sweep the laser facula that comes and should just in time be positioned at two photronic middles, the light-receiving area on two photoelectric cells equates, and two photronic output currents all are slightly larger than the saltus step threshold value of transition detection device.
Because the utility model has been implemented above technical measures, when rotary laser plane positioning device is made the detection and localization of optical plane from zero arbitrary position to maximum receiving range in surveyed area, along the optical plane normal direction, adjust the position of rotary laser plane positioning device and the distance between two photoelectric cells, make indicator indicate two receiving cables and receive laser signal simultaneously, at this moment green LED is bright, and ring one long, fixed locator, transfer the distance between big two photoelectric cells, if it is bright to be still green LED, transfer the distance between big two photoelectric cells again.Above-mentioned steps repeatedly, distance between two photoelectric cells is slightly less than the spot diameter at check point place, at this moment, (or downwards) mobile 0.5mm if again steady arm is made progress, channel pointer promptly indicates following (or top) receiving cable not receive laser signal, the green emitting diode extinguishes, and top (or following) emitting red light diode is bright.The position of rotary laser plane positioning device center line Warning Mark at this moment is exactly the position of optical track mark center line, and its measuring error is less than ± 0.5mm.
In order to guarantee in whole measurement ranges, the positioning error of rotary laser plane positioning device aiming plane all is controlled at ± and below the 0.5mm, the utility model has adopted the technical measures that can continuously change distance between two photoelectric cells.In order to guarantee that two photoelectric cells are symmetrical in a motionless mid point (being the Warning Mark point of position of center line) in motion process, shown in figure three, the utility model adopts one to have the support 2 of screw 1. screws that positive and negative spiral shell literary composition and pitch equates to be fixed on the printed circuit board (PCB), two groups of photoelectric cells 3 are separately fixed on the corresponding support 4, support 4 connects with the nut 5 with positive and negative spiral shell literary composition, and the 6th, support bracket fastened fixed orifice.When screw when both direction rotates, photoelectric cell just equidistantly in opposite directions or opposing motion, to guarantee that rotary laser plane positioning device is with the center line less than the error location optical plane of ± 0.5mm.
In order to open up the range of application of wide laser pickoff, this device is miniaturized, tool.Miniaturization is meant whole electric partss use physical strength height, direct insertion unit, device that thermal stability is good, and whole circuit are distributed on the equal circuit board of two block sizes, two circuit boards are fixed in the casing with screw overlappingly, this layout, reduced the shell area, increased physical strength, also be convenient to the user and carry.Tool is meant that this device is in use simple to operate, the requirement that does not have to be subjected to the personnel of professional training to operate.
This rotary laser plane positioning device bearing accuracy height, volume is little, in light weight, physical strength is high, be easy to carry and cheap, can carry out the multipoint positioning operation simultaneously, there is not the rigid requirement that must professional operating personnel could use, be suitable for installing at ground elevation bigness scale, line, machine, use in the work such as Building Inspector, be suitable for common people especially laterally using in the range finding at a distance, in constructing operation, use as the workman in the fields such as building operation, house decoraton.
Claims (4)
1. a rotary laser plane positioning device comprises two duplicate independent light electrical signal paths; Each photo signal channel all comprises photoelectric sensor, the pulsed current signal of described photoelectric sensor output is converted to the current-to-voltage convertor of pulse voltage signal, the voltage amplifier that the pulse voltage signal that described current-to-voltage convertor is exported amplifies, the comparer that the pulse voltage and a certain normal voltage of described voltage amplifier output compared, the output voltage of described comparer is carried out the voltage jump detecting device of transition detection, the monostable time delay circuit that the above skip signal of threshold value of described voltage jump detecting device output is delayed time, the time-delay skip signal of described monostable time delay circuit output is carried out the microprocessor of signal Processing, after described microprocessor deals with signal position signalling sent into news Chinese percussion instrument and three light emitting diodes; It is characterized in that, it is can be in opposite directions or opposing mobile structure that described two photoelectric sensors are made, when doing to detect on any point in surveyed area, adjust the position of described rotary laser plane positioning device and the distance between described two photoelectric sensors, drop on the middle of described two photoelectric sensors up to laser facula, and the light-receiving area of each photoelectric sensor just in time is slightly larger than the pairing light-receiving area of saltus step threshold value, thereby cause the saltus step of described voltage jump detector state, make when described rotary laser plane positioning device along optical plane normal direction displacement be not less than ± during 0.5mm, just showing in described two photoelectric sensors has not to be subjected to a laser radiation, thus the positioning error of the laser light track center line that in whole surveyed areas, the rotary laser transmitter is scanned out at each check point place drop to ± below the 0.5mm.
2. rotary laser plane positioning device according to claim 1, it is characterized in that described two photoelectric sensors are dragged by a positive and negative threaded screw with constant pitch, described screw is fixed on the printed circuit board (PCB) by support, described two photoelectric sensors are fixed on the nut of described screw, when just or during the described screw of anti-phase rotation, described two photoelectric sensors for the mid point between them in opposite directions or opposingly do equidistance motion.
3. rotary laser plane positioning device according to claim 1, it is characterized in that sending into described same microprocessor from the signal of described two independent signal passages output, use software that signal is handled, and the output signal of described microprocessor sent into described news Chinese percussion instrument and three light emitting diodes, with three kinds of different sound, the light signal indication, described rotary laser plane positioning device is on the upper side in the normal direction of check point along laser plane, just in time on the throne, three kinds of different location statuss on the lower side, to simplify the hardware circuit of described rotary laser plane positioning device, increase status display function, reduce cost, improve reliability.
4. rotary laser plane positioning device according to claim 1, it is characterized in that described rotary laser plane positioning device all adopts direct insertion unit, the device of physical strength height, Heat stability is good, and described unit, device be installed on two onesize printed circuit board (PCB)s, described two circuit boards are fastened on the casing with screw overlappingly, to dwindle the volume of described laser plane steady arm, improve physical strength, reduce cost, be easy to carry, thereby with described rotary laser plane positioning device tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99204760 CN2363266Y (en) | 1999-02-24 | 1999-02-24 | Rotary laser plane positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99204760 CN2363266Y (en) | 1999-02-24 | 1999-02-24 | Rotary laser plane positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2363266Y true CN2363266Y (en) | 2000-02-09 |
Family
ID=33999466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99204760 Expired - Fee Related CN2363266Y (en) | 1999-02-24 | 1999-02-24 | Rotary laser plane positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2363266Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588903C (en) * | 2004-09-08 | 2010-02-10 | 天宝导航有限公司 | Strobe light and laser beam detection for laser receiver |
| CN105388915B (en) * | 2014-08-27 | 2018-07-13 | 矢崎总业株式会社 | Connector shell position detecting device and method for detecting position |
-
1999
- 1999-02-24 CN CN 99204760 patent/CN2363266Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588903C (en) * | 2004-09-08 | 2010-02-10 | 天宝导航有限公司 | Strobe light and laser beam detection for laser receiver |
| CN105388915B (en) * | 2014-08-27 | 2018-07-13 | 矢崎总业株式会社 | Connector shell position detecting device and method for detecting position |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11650291B2 (en) | LiDAR sensor | |
| CN101351684B (en) | Surveying instrument and surveying method | |
| US6643004B2 (en) | Versatile transmitter and receiver for position measurement | |
| US20030174305A1 (en) | Measuring device and measuring method for determining distance and/or position | |
| CN101472796B (en) | Position detector | |
| CN102654388B (en) | Automatic-tracking type landslide displacement measurer with high accuracy and wide range | |
| CN209745245U (en) | Wall surface verticality flatness measuring equipment | |
| US6308428B1 (en) | Laser alignment system | |
| CN101915853A (en) | Wind speed and direction testing device based on light spot position sensitivity | |
| CN2363266Y (en) | Rotary laser plane positioner | |
| US20080143999A1 (en) | Range finder and range finding method | |
| CN210774020U (en) | Ceiling and ground levelness measuring device for project supervision | |
| CN216081957U (en) | Bridge deflection measuring device | |
| CN111271052A (en) | Combined device and method for measuring pile depth, pile diameter and pile hole perpendicularity | |
| CN206113879U (en) | One -dimensional laser scanning gauge head unit | |
| CN205138429U (en) | Photoelectric type slip mass developments on -line monitoring all -in -one | |
| CN106403835A (en) | One-dimensional laser scanning probe | |
| CN203405315U (en) | Laser sensor for testing deflection of bridge | |
| CN107831331A (en) | Rotary body detection means and system | |
| CN212540715U (en) | Multifunctional distance measuring instrument | |
| WO2022213752A1 (en) | Laser receiving apparatus | |
| CN216694955U (en) | Individual high-precision measurement theodolite for engineering | |
| CN216350779U (en) | Vibrating anemometer | |
| CN212692876U (en) | Surveying instrument for building detection | |
| CN203824554U (en) | Digital display device for detecting vertical and horizontal errors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Yune Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |